The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 06, 2007
Filed:
Jan. 18, 2001
Applicant:
Olivier Benoit, Quebec, CA;
Inventor:
Olivier Benoit, Quebec, CA;
Assignee:
Gemplus, Gemenos, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 9/30 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention concerns an anti-SPA modular exponentiation algorithm in an electronic component using a public key ciphering algorithm. A pair of registers and an indicator are used to provide symmetrical processing of bits in the algorithm, so that the values of individual bits cannot be determined from power consumption.